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S and T series diff info

to prevent people asking same questions all the time. if you know more stuff add it up. definate stuff too, i know some celica diffs will fit but there are differences that i don't know of for sure so i haven't put them in.

F and G series: LSD's Available from the factory, some aftermarket LSD's available

E-Series have no LSD's available.

Different versions of the 'T-Series'

JDM 'Kouki' (late model) T-Series:

Slightly thicker axles compared to Zenki / ADM t-series (1~1.5mm)

Larger bearings compared to Zenki / ADM t-series

Disc Brake only (reference required)

1410mm Width

Mounts will line up to any xE7x / AE86

JDM 'Zenki'(early model) T-Series

Slightly skinnier axles compared to Kouki T-series

Smaller bearings compared to Kouki T-series

Disc OR Drum brake (Disc and drum brake have slightly different housings)

1410mm Width

Mounts will line up to any xE7x / AE86

ADM TE72 T-Series

Axles / bearings / Housing same thickness as JDM zenki drum

Drum brake only

1410mm width

Mounts will line up to any xE7x / AE86

ADM TA22 (post 73), RA23, RA28

Axle thickness same as TE72 / JDM Zenki (however they are shorter)

Drum brake only

1365mm width

Mounts will not line up properly with xE7x / AE86 mounts

ADM RA40, RA60

Axles thickness / length (splines unconfirmed) as TE72 / JDM Zenki

Drum brake only

1410mm width

there is a minor difference in the measurements of the mounting points for the trailing arms and also the spring seats are slightly smaller also but factory xE7x, AE86 springs and trailing arms still bolt directly into this diff

Suitable Toyota Differentials to transplant into your AE71 / AE86

Moderate power:

Assuming you are running a T-40 / T-50 gearbox.

T series Differential from a JDM AE86 or ADM TE72, using the following tailshaft combo:

AE86 Front

TE72 Rear OR JDM AE86 Rear

This is because the 'nose' of the carrier on a T-series is 20mm longer than that of an S-series

Large power:

E / F / G series, using a custom tailshaft + mounts

Understanding Toyota Diff Codes / List of Toyota Differentials

Toyota diff codes are broken down into several parts. As an example we'll use this one:

T292

This is then broken down into several parts, like this

T/29/2

The 1st digit denote the size of the Crownwheel

The 2nd two digits denote the ratio of the differential

The final digit denotes the number of pinion gears and if the differential is a factory Limited Slip Differential (LSD)

The 'translator' for diff codes is as follows:

First digit:

A = 138mm

B = 145mm

C = 6.25"

D = 6.62"

E = 7.1"

F = 7.5"

G = 8"

H = 9"

J = 9.25"

K = 9.5"

L = 10.5"

M = 12.5"

N = 13.5"

P = 14"

Q = 12"

R = 162mm

S = 6.38"

T = 6.7"

U = 6"

V = 10.6"

W = 15.5"

X = 142mm

Y = 158mm

Z = 202mm

- no ring gear = FWD

Second, third digits:

01 = 3.30

02 = 3.36

03 = 3.545

04 = 3.556

05 = 3.70

06 = 3.889

07 = 3.90

08 = 4.111

09 = 4.222

10 = 4.375

11 = 4.444

12 = 4.625

13 = 4.79

14 = 4.875

15 = 5.125

16 = 5.286

17 = 5.60

18 = 5.714

19 = 5.833

20 = 6.167

21 = 6.667

22 = 6.78

23 = 6.833

24 = 7.64

25 = 4.556

26 = 5.571

27 = 3.364

28 = 4.30

29 = 4.10

30 = 3.727

31 = 3.909

32 = 6.591 or 4.807

33 = 7.503 or 5.583

34 = 6.781 or 4.786

35 = 7.636 or 5.60

36 = 4.778

37 = 3.583

38 = 3.417

39 = 3.154

40 = 5.375

41 = 3.308

42 = 6.500

43 = 3.550

44 = 3.214

45 = 3.533

46 = 2.928

47 = 3.944

48 = 3.356

49 = 3.729

50 = 3.400

51 = 3.736

52 = 3.722

53 = 3.250

54 = 3.941

55 = 3.333

56 = 2.821

57 = 4.058

58 = 3.238

59 = 3.234

60 = 3.519

61 = 2.724

62 = 2.892

63 = 2.655

64 = 4.312

65 = 3.837

66 = 3.071

67 = 3.526

68 = 3.095

69 = 4.176

70 = 5.857

71 = 2.962

72 = 3.949

73 = 4.285

Fourth digit:

2 = 2 pinions, not factory LSD

3 = 2 pinions, yes factory LSD

4 = 4 pinions, not factory LSD

5 = 4 pinions, yes factory LSD

Information sourced from: Toymods.org

Thanks to Johnny Rochester and Just Half Steppin' for their contributions

Last edited by seek; 26th January 2009 at 11:11 AM.
Reason: no E-series lsd's

You can have any brew you want... as long as it's a Datsun / Corolla / What is that?

there is a minor difference in the measurements of the mounting points for the trailing arms and also the spring seats are slightly smaller also but factory xE7x, AE86 springs and trailing arms still bolt directly into this diff

I'd like to queery this... i have what i beleive to be an RA60 Diff, and yes the trailing arms are off by a bit, and the spring seats are smaller. However they are MUCH smaller, to the point i do not see it safe to use AE86 Springs. Mine is also 1430mm, about 10mm Wider each side than AE86! Do i have a different differential than thought??

I'd like to queery this... i have what i beleive to be an RA60 Diff, and yes the trailing arms are off by a bit, and the spring seats are smaller. However they are MUCH smaller, to the point i do not see it safe to use AE86 Springs. Mine is also 1430mm, about 10mm Wider each side than AE86! Do i have a different differential than thought??

well i know for a fact that ra40 uses the same t series centre and axel splines but its 1430~1440 mm wide and spring seats are very close to ae86 (close enoguh not to worry about) so if you are sure its a t series it could well be the ra60 diff...

a quick question for u gurus can i put in an ra40 center into my t series i think its a small axle version because all the sway bar mounts are welded on if any1 has some good info ill be appreciating it alot cheers mat

the dyno pull to 300rwkw

BT20v is making 300rwkw like i said i would without nitrous so now its time for some spray and see if she will run a 10s or less

a quick question for u gurus can i put in an ra40 center into my t series i think its a small axle version because all the sway bar mounts are welded on if any1 has some good info ill be appreciating it alot cheers mat

Yes.

Use punctuation next time.

You can have any brew you want... as long as it's a Datsun / Corolla / What is that?